diff --git a/classes/TouchOSC.sc b/classes/TouchOSC.sc
index 6b705e1..65f5ec1 100644
--- a/classes/TouchOSC.sc
+++ b/classes/TouchOSC.sc
@@ -39,18 +39,17 @@ TouchOSC {
 	}
 
 	v { | url |
-		^if( controls.at(url).isNil.not, {
-			controls.at(url).value
-		},
-		nil
+		^if( controls.at(url).isNil.not,
+			{ controls.at(url).value },
+			{ ("v: No control with url" + url).postln }
 		);
 	}
 
 	v_ { | url, v |
-		^if( controls.at(url).isNil.not, {
-			controls.at(url).value_(v)
-		},
-		nil);
+		^if( controls.at(url).isNil.not,
+			{ controls.at(url).value_(v) },
+			{ ("v_: No control with url" + url).postln }
+		);
 	}
 
 }